OK, last one, at least for now.

What is the prevalence of laser drilled holes relative to convential 
drilled holes?  Is it used a lot or only in certain applications?  Is 
there a size limitation where laser drilling works better (e.g. Microvia 
drilling) than other areas?  Thin laminate vs. thick laminate?

Here is what we say currently:

·       Some drilling is done via the use of lasers.  If this is not 
tightly controlled, the resin can pyrolize and re-deposit on nearby 
surfaces.  The resin system will have been degraded by heat and the 
redeposited material may interfere with subsequent plating.  This is often 
a problem with laser drilling of holes.

Your thoughts?

Doug Pauls

______________________________________________________________________
This email has been scanned by the Symantec Email Security.cloud service.
For more information please contact helpdesk at x2960 or [log in to unmask] 
______________________________________________________________________